No pptp vpn connection with 10.10 amd64

[malheum]

Binary package hint: network-manager-pptp

Hello,

I did a fresh install of Ubuntu 10.10 amd64 on my laptop. I use a pptp vpn connection to the ipredator service. network-manager-pptp gives me some bogus message about a timeout and deconnects, even though the connection is clearly established.

$ ifconfig ppp0
ppp0 Link encap:Punkt-zu-Punkt-Verbindung
          inet Adresse:93.182.149.43 P-z-P:93.182.149.2 Maske:255.255.255.255
          UP PUNKTZUPUNKT RUNNING NOARP MULTICAST MTU:1496 Metrik:1
          RX packets:67 errors:0 dropped:0 overruns:0 frame:0
          TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
          Kollisionen:0 Sendewarteschlangenlänge:3
          RX bytes:6147 (6.1 KB) TX bytes:102 (102.0 B)

Connection is established. So I am very sure that the settings are correct.

$ route -n
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
93.182.149.2 192.168.10.1 255.255.255.255 UGH 0 0 0 wlan0
93.182.149.2 0.0.0.0 255.255.255.255 UH 0 0 0 ppp0
192.168.10.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0 wlan0

The default route is still the old one over the wireless interface. It should be substituted by a new default route over ppp0.

After the deconnection by network-manager the routing table looks like this:
$ route -n
Kernel-IP-Routentabelle
Ziel Router Genmask Flags Metric Ref Use Iface
93.182.149.2 192.168.10.1 255.255.255.255 UGH 0 0 0 wlan0
192.168.10.0 0.0.0.0 255.255.255.0 U 2 0 0 wlan0
169.254.0.0 0.0.0.0 255.255.0.0 U 1000 0 0 wlan0
0.0.0.0 192.168.10.1 0.0.0.0 UG 0 0 0 wlan0

Clearly the host route to 93.182.149.2 should be deleted on cleanup, which is a bug too, imho.

This is from /var/log/syslog during the time that the connection is started and then terminated.
Nov 26 11:24:27 tuxtux NetworkManager[1019]: <info> VPN service 'org.freedesktop.NetworkManager.pptp' started (org.freedesktop.NetworkManager.pptp), PID 2442
Nov 26 11:24:27 tuxtux NetworkManager[1019]: <info> VPN service 'org.freedesktop.NetworkManager.pptp' appeared, activating connections
Nov 26 11:24:27 tuxtux NetworkManager[1019]: <info> VPN plugin state changed: 3
Nov 26 11:24:27 tuxtux NetworkManager[1019]: <info> VPN connection 'ipredator pptp' (Connect) reply received.
Nov 26 11:24:27 tuxtux pppd[2445]: Plugin /usr/lib/pppd/2.4.5//nm-pptp-pppd-plugin.so loaded.
Nov 26 11:24:27 tuxtux pppd[2445]: pppd 2.4.5 started by root, uid 0
Nov 26 11:24:28 tuxtux NetworkManager[1019]: SCPlugin-Ifupdown: devices added (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Nov 26 11:24:28 tuxtux NetworkManager[1019]: SCPlugin-Ifupdown: device added (path: /sys/devices/virtual/net/ppp0, iface: ppp0): no ifupdown configuration found.
Nov 26 11:24:28 tuxtux pppd[2445]: Using interface ppp0
Nov 26 11:24:28 tuxtux pppd[2445]: Connect: ppp0 <--> /dev/pts/0
Nov 26 11:24:28 tuxtux modem-manager: (net/ppp0): could not get port's parent device
Nov 26 11:24:28 tuxtux pptp[2450]: nm-pptp-service-2442 log[main:pptp.c:314]: The synchronous pptp option is NOT activated
Nov 26 11:24:28 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 1 'Start-Control-Connection-Request'
Nov 26 11:24:28 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_disp:pptp_ctrl.c:739]: Received Start Control Connection Reply
Nov 26 11:24:28 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_disp:pptp_ctrl.c:773]: Client connection established.
Nov 26 11:24:29 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 7 'Outgoing-Call-Request'
Nov 26 11:24:29 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_disp:pptp_ctrl.c:858]: Received Outgoing Call Reply.
Nov 26 11:24:29 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_disp:pptp_ctrl.c:897]: Outgoing call established (call ID 0, peer's call ID 4608).
Nov 26 11:24:29 tuxtux pppd[2445]: CHAP authentication succeeded
Nov 26 11:24:29 tuxtux kernel: [ 1538.050917] padlock: VIA PadLock Hash Engine not detected.
Nov 26 11:24:29 tuxtux modprobe: FATAL: Error inserting padlock_sha (/lib/modules/2.6.35-23-generic/kernel/drivers/crypto/padlock-sha.ko): No such device
Nov 26 11:24:29 tuxtux kernel: [ 1538.073795] PPP MPPE Compression module registered
Nov 26 11:24:29 tuxtux pppd[2445]: MPPE 128-bit stateless compression enabled
Nov 26 11:24:30 tuxtux pppd[2445]: Cannot determine ethernet address for proxy ARP
Nov 26 11:24:30 tuxtux pppd[2445]: local IP address 93.182.149.43
Nov 26 11:24:30 tuxtux pppd[2445]: remote IP address 93.182.149.2
Nov 26 11:24:30 tuxtux pppd[2445]: primary DNS address 93.182.182.85
Nov 26 11:24:30 tuxtux pppd[2445]: secondary DNS address 93.182.182.85
Nov 26 11:25:08 tuxtux NetworkManager[1019]: <warn> VPN connection 'ipredator pptp' (IP Config Get) timeout exceeded.
Nov 26 11:25:10 tuxtux pppd[2445]: Terminating on signal 15
Nov 26 11:25:10 tuxtux pppd[2445]: Connect time 0.7 minutes.
Nov 26 11:25:10 tuxtux pppd[2445]: Sent 0 bytes, received 12874 bytes.
Nov 26 11:25:10 tuxtux NetworkManager[1019]: <info> Policy set 'Auto Alice Wlan' (wlan0) as default for IPv4 routing and DNS.
Nov 26 11:25:10 tuxtux pppd[2445]: MPPE disabled
Nov 26 11:25:10 tuxtux pppd[2445]: Child process /usr/sbin/pptp vpn.ipredator.se --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-2442 (pid 2447) terminated with signal 15
Nov 26 11:25:10 tuxtux pppd[2445]: Connection terminated.
Nov 26 11:25:10 tuxtux avahi-daemon[1018]: Withdrawing workstation service for ppp0.
Nov 26 11:25:10 tuxtux NetworkManager[1019]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
Nov 26 11:25:10 tuxtux pptp[2450]: nm-pptp-service-2442 warn[decaps_hdlc:pptp_gre.c:204]: short read (-1): Input/output error
Nov 26 11:25:10 tuxtux pptp[2450]: nm-pptp-service-2442 warn[decaps_hdlc:pptp_gre.c:216]: pppd may have shutdown, see pppd log
Nov 26 11:25:10 tuxtux pptp[2458]: nm-pptp-service-2442 log[callmgr_main:pptp_callmgr.c:234]: Closing connection (unhandled)
Nov 26 11:25:10 tuxtux pptp[2458]: nm-pptp-service-2442 log[ctrlp_rep:pptp_ctrl.c:251]: Sent control packet type is 12 'Call-Clear-Request'
Nov 26 11:25:10 tuxtux pptp[2458]: nm-pptp-service-2442 log[call_callback:pptp_callmgr.c:79]: Closing connection (call state)
Nov 26 11:25:11 tuxtux pppd[2445]: Exit.

ProblemType: Bug
DistroRelease: Ubuntu 10.10
Package: network-manager-pptp 0.8.1+git.20100810t192516.1e6db5a-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.35-23.40-generic 2.6.35.7
Uname: Linux 2.6.35-23-generic x86_64
NonfreeKernelModules: nvidia
Architecture: amd64
Date: Fri Nov 26 11:25:40 2010
InstallationMedia: Ubuntu 10.10 "Maverick Meerkat" - Release amd64 (20101007)
ProcEnviron:
 LANGUAGE=de_DE:de:en_GB:en
 PATH=(custom, user)
 LANG=de_DE.utf8
 SHELL=/bin/bash
SourcePackage: network-manager-pptp

[malheum (maxheise)]

The pptp connection works reliably if I enter one single of the many ip addresses of the ipredator vpn gateway instead of the dns name.

vpn.ipredator.se resolves to quite a lot of ip addresses. So either network-manager-pptp has a general bug with the dns resolver, or it has problems with multi homed hosts.

$ dig @8.8.8.8 vpn.ipredator.se

; <<>> DiG 9.7.1-P2 <<>> @8.8.8.8 vpn.ipredator.se
; (1 server found)
;; global options: +cmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 40086
;; flags: qr rd ra; QUERY: 1, ANSWER: 20, AUTHORITY: 0, ADDITIONAL: 0

;; QUESTION SECTION:
;vpn.ipredator.se. IN A

;; ANSWER SECTION:
vpn.ipredator.se. 557 IN A 93.182.130.2
vpn.ipredator.se. 557 IN A 93.182.133.2
vpn.ipredator.se. 557 IN A 93.182.146.2
vpn.ipredator.se. 557 IN A 93.182.147.2
vpn.ipredator.se. 557 IN A 93.182.148.2
vpn.ipredator.se. 557 IN A 93.182.149.2
vpn.ipredator.se. 557 IN A 93.182.150.2
vpn.ipredator.se. 557 IN A 93.182.151.2
vpn.ipredator.se. 557 IN A 93.182.152.2
vpn.ipredator.se. 557 IN A 93.182.153.2
vpn.ipredator.se. 557 IN A 93.182.164.2
vpn.ipredator.se. 557 IN A 93.182.179.2
vpn.ipredator.se. 557 IN A 93.182.180.2
vpn.ipredator.se. 557 IN A 93.182.181.2
vpn.ipredator.se. 557 IN A 93.182.185.2
vpn.ipredator.se. 557 IN A 93.182.186.2
vpn.ipredator.se. 557 IN A 93.182.187.2
vpn.ipredator.se. 557 IN A 93.182.188.2
vpn.ipredator.se. 557 IN A 93.182.189.2
vpn.ipredator.se. 557 IN A 93.182.190.2

;; Query time: 33 msec
;; SERVER: 8.8.8.8#53(8.8.8.8)
;; WHEN: Sat Dec 11 16:33:42 2010
;; MSG SIZE rcvd: 354

works => Gateway: 93.183.153.2
does not work => Gateway: vpn.ipredator.se

[ds9 (stephane-lentz)]

I face the same issue - other DNS name but also a name mapped to several IPs.
Others users facing the issue exist : http://ubuntuforums.org/showthread.php?p=10575345#post10575345

[ds9 (stephane-lentz)]

The problem occurs only on 64 bit systems.
The error seems to come from nm-pptp-service

NetworkManager[3329]: <warn> VPN connection 'HP VPN PPTP MUNICH' (IP Config Get) timeout exceeded.

** (nm-pptp-service:7272): WARNING **: <WARN> get_pptp_gw_address_as_gvalue(): couldn't look up PPTP VPN gateway IP address 'munich.mycompany.net' (-5)

** Message: <info> Terminated ppp daemon with PID 7302.

Terminating on signal 15
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 10 / phase 'terminate'
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 8 / phase 'network'
Connect time 0.7 minutes.
Sent 0 bytes, received 0 bytes.
NetworkManager[3329]: <info> Policy set 'Auto eth0' (eth0) as default for IPv4 routing and DNS.
MPPE disabled
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 10 / phase 'terminate'
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 5 / phase 'establish'
Child process /usr/sbin/pptp munich.tunnel.hp.net --nolaunchpppd --loglevel 0 --logstring nm-pptp-service-7272 (pid 7304) terminated with signal 15
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 11 / phase 'disconnect'
Connection terminated.
NetworkManager[3329]: SCPlugin-Ifupdown: devices removed (path: /sys/devices/virtual/net/ppp0, iface: ppp0)
** Message: nm-pptp-ppp-plugin: (nm_phasechange): status 1 / phase 'dead'
** Message: nm-pptp-ppp-plugin: (nm_exit_notify): cleaning up

** (nm-pptp-service:7272): WARNING **: <WARN> pppd_watch_cb(): pppd exited with error code 5

[hariprasad (hariprasad)]

I have similar problem on Ubuntu 10.04 x86-64. When Notebook with Win XP is connected, then connection is established, when i use my desktop with Ubuntu, than not. Configuration is of cause the same.